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A Stalinist Antibiotic
Alternative
A hoary Soviet method for fighting infections may prove
invaluable in an age of antibiotic resistance. Maybe that's why
pharmaceutical companies are flocking to a remote laboratory in
Tbilisi.
By Lawrence Osborne
In a barely heated ward for newborns on the top floor of the
Georgian Republic Children's Hospital, Tamila Gogitidze
carefully opens a glass ampul filled with amber liquid. The
hospital, in the Degomi suburb of Georgia's decaying capital
city, Tbilisi, is a spartan affair: its radiators are
ramshackle, the electricity intermittent and the raw concrete
heavy on the eyes. A few American posters of babies cavorting in
cabbages seem direly out of place. The liquid trapped inside the
ampul, meanwhile, can be identified from a box on the floor. Its
label is Latin: Bacteriophagum Intestinalis Fluidum. Gogitidze,
a nurse on the intensive care unit for newborns, cracks open the
ampul, pours the liquid onto a teaspoon and prepares to
administer it to one of her babies, a 3-month-old boy abandoned
at the hospital a few days before by his impoverished family. He
is screaming lustily.
''Look,'' Gogitidze says, holding up a tiny wrist. ''The
parents made a kind of crude tattoo so that they can identify
him later on. But for now, we must focus on his intestinal
infection.''
The fluidum is tipped like any cough syrup into the boy's
blubbering mouth. His face contorts into a horrible wince; I
look apprehensive. But Dr. Tamar Gotua, head of the intensive
care unit, takes my arm and says: ''We use them with almost all
our children. Don't look so worried!''
It's hard not to feel worried in Georgia. After years of
bloody civil war following the collapse of the Soviet Union, the
republic is in free fall. Electricity runs for only part of the
day; blackouts are a daily, if not hourly, occurrence.
Nevertheless, in this dilapidated neonatal ward a possibly
revolutionary medicine, one essentially unknown in the West, is
being casually administered on a simple teaspoon:
bacteriophages, or microscopic viruses that actually ''eat''
bacteria.
Downstairs in the same hospital, I talk with Dr. Irakli
Pavlenishvili, head of pediatrics, in an office so cold that our
breath mists. The doctor offers me some Greek brandy and warms
his hands by a portable electric heater. We chain-smoke
furiously. ''We've been using phages for years,'' he says
briskly, looking up nervously at the flickering lights. ''There
are no major side effects. They're a living, natural force, not
a toxic chemical. I wish our electricity were as reliable!''
Today, the West is paying renewed attention to this
unheralded therapy created behind the Iron Curtain. The reason:
antibiotic resistance. Although drugs like penicillin have held
killer bacteria at bay for half a century, the bugs keep
genetically adapting to them, evolving into tougher, smarter
variants of ancient adversaries. The systematic overuse of
antibiotics by doctors, especially in the United States, has
helped breed ''superbugs'' -- bacteria resistant to even the
most potent antibiotics, like vancomycin.
Last year, The New England Journal of Medicine published an
alarming editorial about superbugs. ''The outlook is rather
grim,'' it wrote. ''The adaptive potential of the microbial
world is such that for each new antibiotic that is introduced,
several escape mechanisms are soon devised.''
Alexander Tomasz, a leading microbiologist at Rockefeller
University, agrees: ''The miracle days of antibiotics are over.
We simply didn't think enough about the evolutionary
consequences of drug use.'' With leading medical researchers in
the West looking anxiously for antibiotic alternatives,
bacteriophage therapy is suddenly looking ''very promising,'' as
Tomasz puts it.
''I'm convinced that bacteriophages will work,'' says Carl
Merril, chief of the biochemical genetics laboratory at the
National Institutes of Health. ''But there's the psychological
obstacle of a new treatment coming from the former Soviet Union.
It's unusual, to say the least.''
They may sound exotic, but bacteriophages are in fact among
the most common organisms on earth. (The word derives from the
Greek phagin, ''to eat.'') Viral predators only one-fortieth the
size of the average bacteria cell, they swarm unseen around us,
busily searching and destroying their favorite food: germs. In
electron microscope images, phages show up as ghostly,
spiderlike creatures with transparent box-shaped heads, rigid
tails and a tangle of legs for gripping their prey. They are so
tiny that a single drop of tap water may contain a billion of
them.
How do phages kill bacteria? The answer is, with chilling
efficiency. Latching onto the walls of a bacteria cell, the
phage injects it with the genetic material stored in its very
own head. Like a living syringe, it gradually empties itself
into the victim and takes over its genetic machinery. Inside the
helpless bacteria, bits and pieces of ''daughter'' phages begin
to appear with sinister rapidity: rows of little heads, lines of
tails, then legs. These different body parts assemble into
miniphages, using the host cell as a kind of factory. As the
phages multiply exponentially inside it, the bacterium's walls
weaken -- then explode like a soap bubble. Scientists call this
rather nightmarish process ''lysis.'' It is the flash point of a
gigantic microbial war between phages and bacteria, in which
humans are a mere side issue.
These deadly microscopic hit men were discovered
independently during World War I by the English microbiologist
Frederick Twort and the flamboyant Canadian biologist Felix
d'Herelle, then working in a laboratory at the Institut Pasteur
in Paris. It was d'Herelle who gave them their name in a 1917
paper that predicted a revolution in the treatment of infectious
diseases.
D'Herelle first discovered bacteriophages while working in
the Mexican state of Yucatan in 1910. He noticed them in the
most unlikely of places: the diarrhea of locusts. During an
invasion of these insects, d'Herelle collected sick specimens
and observed their abundant stools. He concluded that the
locusts were suffering from septicemia caused by coccobacilli
bacteria. D'Herelle smeared some of the diarrhea onto plates of
agar to grow cultures, but then noticed something odd. After a
while, clear circular spots a few millimeters across had
appeared in the agar, suggesting that something was munching
away at the coccobacilli. What were these tiny bacteria-eaters?
Back at the Institut Pasteur, d'Herelle repeated the
experiment in 1915 with stools taken from a Paris-based squadron
addled with dysentery. In the excrement of the officers,
d'Herelle again detected agents that consumed the bacteria
spontaneously. Nature, d'Herelle boldly announced to the world,
had provided humankind with a living, natural weapon against
germs.
Phages were popularized by Sinclair Lewis in his 1925 novel
''Arrowsmith,'' about a young doctor who goes to the West Indies
to use them against an epidemic of bubonic plague. ''You may,''
says one of the novel's characters to Martin Arrowsmith, who was
inspired by the real-life d'Herelle, ''have hit on the supreme
way to kill pathogenic bacteria!''
But it was not to be. Phages proved to be a hit-or-miss
affair as a therapy. One problem was that there are hundreds of
types of phages, and each type kills only one variety of
bacteria. Predator and prey must be perfectly matched, a
daunting process. What's more, there were early problems with
purification. When phages burst out of the victim's cell, they
leave behind debris that can contaminate the solution. This
debris can prove fatal to humans, a problem that the
purification technologies of the early days were unable to
solve.
As a result of these difficulties, phages were quickly
outpaced by a rival drug: penicillin. Although Eli Lilly
actually manufactured therapeutic phages for the United States
market in the 1930's, after World War II they were largely
consigned to the margins of Western medicine -- even as they
took center stage in DNA research, where their simple molecular
structure made them an ideal tool for peering into the inner
workings of genes. Sir Francis Crick and Max Delbruck, two
architects of DNA theory, were phage researchers. Phage research
helped unlock molecular biology at the very moment that they
disappeared from the medical scene.
Yet there is a twist to this story. The aristocratic
d'Herelle was a passionate Communist and admirer of Stalin. In
1934, he accepted an invitation from the Soviet government to
join the Institute of Bacteriology in Tbilisi, recently set up
by a young Georgian microbiologist named George Eliava. The
Eliava Institute, as it became known, became the world's leading
center of therapeutic phage research. One of its first successes
was a powerful dysentery phage for the Red Army during the World
War II. Over the ensuing decades, the institute began supplying
precisely targeted phages to hospitals all over the Soviet bloc.
The Eliava Institute became the largest phage library in the
world, with a permanent ''museum'' of more than 300 phage
clones.
''We've been perfecting bacteriophages as a medicine for over
70 years, just as d'Herelle said we could,'' explains Nina
Chanishvili, a senior researcher at the Eliava Institute today.
''But has anyone been listening?''
On an icy December day, Chanishvili and I walk through the
hilly Tbilisi district of Saburtalo on our way down to the
Eliava Institute. The path winds vertiginously through plots of
spindly pomegranate trees touched with snow. Clumped along the
hillside are rotting Soviet-era apartment blocks. On the
streets, the shops are lighted only with candles.
Nina's uncle, Teimuraz Chanishvili, has helped direct the
Eliava Institute for a quarter of a century, and she, too, has
devoted most of her life to phage research. But the last 10
years have been cruel. In recent years, she says, the
institute's phage output has dwindled alarmingly. Virtually
unpaid, the institute's workers now cling to a fading
infrastructure. When high-tech equipment breaks down, they must
work with improvised materials. Also, adds Chanishvili,
''because of the power cuts, we've lost about half of our phage
library.'' (Phage cultures must be refrigerated.) Georgia's
economic collapse has dwindled the demand for phages as well.
Once the institute manufactured phage sprays, salves, ointments,
tablets -- you name it. But now, even at $3 to $5 for a box of
10 ampuls, many of Tbilisi's sick simply cannot afford them.
The institute, however, still sits in its graceful park of
cypresses overlooking the Mtkvari River, and over the wall I see
the handsome cottage that Stalin had specially built for
d'Herelle. It is still called ''d'Herelle's cottage,'' though it
was later occupied by the Georgian K.G.B. Inside, the institute
is a cavelike labyrinth of damp cement corridors, stairwells
dripping wires and mournfully antiquated labs. The old
fermentation vats that used to churn out phage preparations for
the Soviet Ministry of Health stand abandoned in a room with no
glass in the windows.
Upstairs, Chanishvili shares a cramped and unheated lab with
a fellow researcher, Marina Tediashvili, and half a dozen young
medical students. They are all women. They are all shivering.
''Of course,'' says Tediashvili, ''the men naturally move on to
better things.'' Equipment is largely rudimentary. Among the
centrifuges, water baths and piles of petri dishes stand dozens
of beer and vodka bottles that the women use as containers for
their solid agar. To melt the agar, they pop one of the vodka
bottles inside an old Nescafe tin sitting on a hot plate. ''We
like vodka bottles,'' Chanishvili feels obliged to explain,
''because they're so transparent.''
The interns spend most of their time on the tedious chore of
planting phage cultures in the specimens of bacteria, turning
each petri dish into a kind of phage farm. I watch as one of the
women sterilizes the tip of an applicator in a Bunsen burner,
drips a blob of phage solution onto a plate of E. coli and
carefully closes the plastic lid. ''E. coli causes epidemics
worldwide,'' explains Tediashvili. ''But these phages find E.
coli tasty. They go through it like Oreos.''
Holding up an E. coli dish that has been incubated for two
days, she points to a smattering of irregular, clear circles
carved out of the agar. They look like the perforations of a
shotgun blast. ''Isn't that beautiful?'' she whispers. A dish of
salmonella is peppered with smaller, more regular bullet holes.
Chanishvili explains that she and her colleagues initially
catch phages in gunky places where the creatures are known to
thrive: sewage water, for example. They are then stored in a
liquid broth kept in a refrigerator at 4 degrees Celsius. Oddly
enough, they don't need to be fed with tasty germs to stay
alive. ''Phages can live for months without food,'' Chanishvili
says. ''Without additional germs to feed on, they cannot
multiply out of control.'' If their numbers begin to decrease,
however, a few bugs are thrown to them and they multiply again.
In the same wing, I am taken to see Amiran Meipariani, head
of phage research. Meipariani has been here since 1946, at the
height of the Stalin era, and his sardonic blue eyes seem to
have seen it all. Like most Georgian doctors, he chain-smokes
and shrugs frequently. His office is filled with disconnected
Soviet telephones; on the wall hangs a faded portrait of Felix
d'Herelle.
''As you can see, we've fallen on hard times,'' he says,
shrugging. ''But it is now realized worldwide that an
alternative to antibiotics should be sought and that the best
one is bacteriophages. Perhaps it's a boon for us. Did you know
that NATO is now interested in one of our inventions?'' His eyes
light up puckishly. He is referring to a topical phage
application invented by the Eliava Institute and known as a ''PhageBioDerm,''
a kind of bandage saturated with a cocktail of five to nine
different phages that can treat infected burn wounds. It is the
perfect military Band-Aid. Russian soldiers have used them in
Chechnya. ''Of course, women and kids can use them in the
kitchen, too,'' he adds with a sales-pitch smile.
The Eliava has a local patent on the phagoderm, which it
manufactures itself along with the ''intestiphage,'' the
17-phage cocktail I saw being administered to the abandoned
baby. All in all, the Eliava produces about 10 different phage
applications that target about 15 different bacteria genera. By
creating drugs that combine many phages at once, their
administration can be simplified to a single dose.
Considering the difficulties involved in doing science in
Georgia, the advancements made by the Eliava are remarkable.
Chief among these has been the creation of an intravenous remedy
to the deadly staph aureus bacteria, a strain that threatens to
one day outpace vancomycin. According to the Eliava, it's been
used successfully on dozens of patients.
In the past few years, the Eliava's skill has attracted the
attention of Western entrepreneurs eager to harness the
knowledge bottled up in Tbilisi's laboratories. But the Georgian
scientists worry about this development as much as they
celebrate it. Who will ultimately benefit from the commercial
exploitation of their work? Will the Americans and Europeans
simply steal their expertise and innovations? ''The local market
has collapsed,'' says Meiparinai with a final shrug. ''But who
will patent phages in the West? Who's going to make the
millions?'' Then he corrects himself. ''The billions, I mean.''
Indeed, the worldwide antibacterials market is estimated to be
worth $25 billion a year.
So far, the Eliava's experience of cooperation with American
companies interested in phages has not exactly been propitious.
In 1996, a Canadian venture capitalist named Caisey Harlingten
came to Tbilisi, eager to talk to the Chanishvilis about their
work. What happened next was, as Chanishvili puts it tersely, a
''culture clash.'' Although a start-up company that came to be
named Phage Therapeutics was quickly set up in Seattle, the
planned Tbilisi affiliate was closed almost as soon as it
opened. ''Harlingten told me,'' says Chanishvili bitterly,
''that the American consumer would never accept a medical
product from the Soviet Union.'' Meanwhile, Phage Therapeutics
is busy readying Eliava-inspired medicines for the U.S. market.
''We gave the Americans access to all this background
research,'' she goes on, ''and they simply walked away with it.
They told us we were stupid at business. Well, that at least was
true.''
That evening, I meet with Teimuraz Chanishvili at his home on
Kazbegi Street, a lampless street of elegant 19th-century
Russian houses. A Nabokovian charmer now in his 70's, he greets
me at the top of the stairs in his dressing gown. ''Come and
look at the TV,'' he says excitedly. ''The Americans have stolen
my phage photographs!'' By one of those coincidences that even a
journalist couldn't invent, there indeed is an American
documentary about phages playing on the TV. Teimuraz's
uncopyrighted images of phages float like extraterrestrial
prawns across the screen. ''I didn't get a cent!'' he cries,
shaking his finger at the screen.
Later, we have a calmer chat over chestnut soda, and he tells
me the sad story of George Eliava. The man who established the
bacteriophage's central place in Soviet medicine was not exactly
rewarded for his efforts. When not doing brilliant science,
Eliava was a handsome playboy who had the misfortune to fall in
love with a woman also admired by Lavrenti Beria, Stalin's
secret police chief. Despite Stalin's high regard for
bacteriophages, it was Eliava's death warrant.
''Beria had Eliava shot in 1937 on a pretext,'' Teimuraz says
matter-of-factly. ''That's the way it was back then.'' He adds
with a chuckle, ''Thankless work, bacteriophages!''
As if on cue, the lights go out.
In the well-lighted laboratories in europe and the United
States, however, the prospects for phages are glittering. In
this country alone, at least three start-up companies are vying
to be the first to push a phage therapy through Food and Drug
Administration approval. In addition to Harlingten's Phage
Therapeutics in Seattle, there are Intralytix in Baltimore -- a
company with numerous Georgian expats on the payroll -- and
Exponential Biotherapies on Long Island, a small biotech company
run by Dr. Richard Carlton that expects to petition the F.D.A.
to begin clinical trials on a phage drug this spring.
Big challenges face these companies. One pitfall of early
phage therapy was that wild phages are expelled very quickly by
the body's filtering system, often reducing their effectiveness.
The immune system, in other words, treats them as foreign
bodies. Can new technologies, however, pinpoint ''domesticated''
phages that can linger longer in the body? While the Eliava has
had some success on this front, American scientists hope to do
even better.
The work of Carl Merril has led the way. In the April 1996
edition of Proceedings of the National Academy of Sciences, the
N.I.H. researcher published the result of some intriguing
experiments with phages and mice. Essentially, he was able to
selectively breed ''mutant'' phages that remained in the mice
far longer than the wild variety. ''We altered the code proteins
in the phages,'' Merril explains, ''to make them more durable.''
In the same issue, the Nobel laureate Joshua Lederberg of
Rockefeller University wrote, ''This is an ingenious surmounting
of one of the hurdles to the use of phage in therapy.''
It was Merril, recalls Carlton of Exponential Biotherapies,
''who told me that phages had been used as a therapy back in the
30's. What sometimes limited them, though, was this problem of
making them stick around inside your body. But today, with
genetic engineering, we can selectively breed phages that can
last thousands of times longer.'' This represents a huge
advance. After all, a single phage can produce 40,000 daughters
in an hour; one hour later, the number increases exponentially
to 4 billion. As Carlton puts it, ''It's the only drug that
makes more of itself as it's actually being used!'' In recent
experiments with mice infected with the E. coli bacteria, Merril
reports, he cured every single animal with these long-life
phages.
At University of Maryland labs used by Intralytix, Zemphira
Alavidze, who also runs her own lab at the Eliava Institute,
presides over the same array of petri dishes, jars of agar and
phage phials. But the difference between Baltimore and Tbilisi
is twofold. ''Here,'' she says, ''we have lots of mice to
experiment on. And we can purify phage solutions using
chromatography. Purification is much more tricky in Tbilisi --
and mice are just out of the question.''
Purification and in-depth animal testing are essential first
steps toward commercializing phages in the painstaking medical
culture of the West. Clinical trials involving human patients
are yet to come. On this front, the Georgians are way ahead of
the Americans. Indeed, the Soviet bloc's headlong experiment
with human patients may well turn out to be the greatest
contribution of the embattled Tbilisi doctors to the eventual
medical use of phages.
Dr. David Shrayer, now a cancer researcher at Brown
University, worked as a medical officer on the construction of
the Baikal-Amur railroad in Siberia in the 1970's, where he says
he regularly administered bacteriophages to Soviet construction
workers. ''Even back then,'' Schrayer says, ''these Siberian
workers were suffering from infections that were resistant to
antibiotics. The phages worked splendidly. But here's the catch.
D'Herelle and then the Soviets ruined the image of phages in the
West by testing them on people without first conducting proper
animal tests. Animal tests were expensive; patients were cheap.
That was the tragedy of phages in the East. But it was also
their trump card. We learned that they really work.''
The most exclusive private clinic in tbilisi is the plastic
surgery unit within the Clinical Diagnostic Center, a stone's
throw from the university. The contrast with the children's
hospital couldn't be greater. A small vestibule sports a
soothing green fish tank, while Tchaikovsky burbles on the sound
system. Open just a year, the clinic serves the liposuction
needs of Tbilisi's rich. Here I sit with the elegant Dr. Iva
Kuzanov, Georgia's top plastic surgeon, looking at an album of
post-op photographs. They are stomach-turning.
''This man was bitten in the nose by a pit bull. See how
handsome he is now? This woman came to us from San Francisco for
a sex-change operation. What do you think of her penis?''
''Marvelous,'' I say.
There is an alarm clock hanging from it. ''To prove the
strength,'' Kuzanov says with a totally straight face. ''We
amputated her finger and put it inside. Amazing, no?''
What is really remarkable about the clinic, however, is the
frequency with which phages are used to counter surgical-wound
infections in these complex (if bizarre) cosmetic operations.
Many of Kuzanov's patients are from the West, he says. ''They
come because of the low prices here.'' As for phages, Kuzanov
claims, they've proved to be excellent for burn traumas or
infections arising from accidents. He holds up a picture of a
breast-reduction job. ''We treated her lesions with phages.
Look, a perfect recovery.''
To see one of these phage patients for myself, however, I
decide to call on the first person ever to have been treated
with intravenous phages. His name is Prince Avtandil Chkheidze,
M.D. He is a prince and a doctor. Chkheidze receives me in an
imposingly austere office at his private clinic. Although it is
freezing cold, he wears only a snappy maroon blazer. After first
showing me a copy of his family's coat of arms, he hands me a
more welcome glass of steaming Turkish coffee. ''So you want to
hear about phages?'' he whispers like a character out of Edgar
Allen Poe.
Chkheidze spins out his story. After graduating in 1976 from
a Tbilisi medical school, he was posted to a gynecology clinic
in Leningrad. Overworked and exhausted, he eventually fell ill
with a severe lung infection. In time, he came to be
additionally afflicted with a long-term purulent skin infection.
Even though his hospital placed him in a top Soviet clinic with
state-of-the-art Western medicine, its antibiotics made no
difference. His skin infection worsened, and he begged to be
allowed to return to Tbilisi. Once there, he asked his father,
one of the city's leading doctors, to see if he could be treated
with intravenous phages -- a procedure never carried out before.
The risks were great. But unable to move and now dependent on
crutches, Chkheidze didn't much care.
''At first,'' he says, ''my father was horrified by my
proposal. Then Teimuraz Chanishvili told us he had a staph
aureus phage already tested on animals. But he was afraid to use
it on humans.''
They therefore had to find someone willing to administer the
phages. In the end, Dr. Vakhtang Bochozishvili, a famous
professor at the Sepsis Center in Tbilisi, agreed to do so. ''It
was a bit of a conspiracy,'' Chkheidze says. ''I was the
ultimate guinea pig.''
On the fifth day of treatment, the prince threw away his
crutches and went to a late-night party with his friends. The
taboo on intravenous phages, he notes, was shattered with one
blow. ''On the seventh day I was completely cured. It was quite
miraculous.''
The possible implications of this strange fragment of medical
history are enormous. Chkheidze says that he would like to
introduce widespread intravenous phages into his clinic. In
fact, he claims, his clinic doesn't use antibiotics at all to
treat infection. He also claims that during the last 10 years of
the Soviet system, approximately 20,000 people were cured of
chronic sepsis by phages, though it is hard to verify such
statistics. As it is, he adds: ''I use them every day in my
practice. They are excellent for pregnant women, extremely
safe.'' He lowers his voice. ''I use them in vaginal suppository
form. They are pure gold.''
But what of human patients in the West? This is a far more
shadowy affair, since phages can be used only in extreme cases
in which a dying patient's family gives explicit permission for
their use. So far, such cases have been extremely rare. Last
year, Nina Chanishvili was contacted by two Belgian brothers who
had read about phage therapy on the Internet. Their 23-year-old
sister lay dying of a severe post-measles viral infection of the
brain. A trepanation in her skull to inject antibiotics, the
brothers explained, had become infected with staphylococcus
areus. Could Chanishvili treat the secondary infection with
phages?
''I just had to go,'' she says. ''I brought the phages
myself.'' According to Chanishvili, the secondary staph
infection cleared up within days, though the girl remained
mortally ill from her untreatable primary condition.
In another recent case, a woman dying of a Marfan-related
heart problem in Toronto was treated for a staph infection by
having a solution of phages sprayed directly onto her aorta. The
infection was vanquished within 20 hours. (Two months later, the
woman died of her heart condition.) Phage Technologies, which
provided the medicine, hyperbolically hailed it as ''the first
use of phage therapy in the West in modern times.''
Of course, one patient is far from the rigorous proof Western
medicine requires; perhaps the staph infection would have
cleared up on its own. Nevertheless, says Elizabeth Kutter, a
leading American phage researcher at Evergreen State College in
Olympia, ''what this shows is that phages are ready to be used
in the West.''
The next international phage conference will be held this
June in Montreal, d'Herelle's birthplace. It is difficult not to
imagine the old Communist iconoclast smiling in his grave -- not
to mention Comrade Stalin. ''It's strange to think,'' says Nina
Chanishvili, ''that Stalin might be considered a medical
benefactor of the 21st century!''
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