World’s First Successful In Vitro Human Artificial Sperm Production For Male Infertility

French-based biotech company Kallistem has just announced that it has successfully produced the world’s first artificial sperm using a process called in vitro human spermatogenesis. Founded in 2012 by Philippe Durand and Marie-Helene Perrard, these internationally renowned scientists specialising in human reproductive biology may have achieved the breakthrough that could help to preserve male fertility and treat male infertility.

New technologies create ‘test-tube’ sperm

pure ingredients of the highest degree make for a more effective supplement Kallistem, together with its partners, has been focusing on both treatments for male infertility, and germinal cell culture to protect male fertility. At the end of 2014, the company’s advances in biotechnology facilitated the development of fully formed human spermatozoa outside the body.

The spermatozoa were created in a laboratory setting from spermatogonia (immature germ cells) obtained from patient testicular biopsies.

Creating spermatogenesis in vitro is an exceptionally complex process, taking 72 days to complete. Kallistem has utilized two pioneering, patented technologies to achieve this world first; both of which comply with the current regulatory standards.

This isn’t the first time in vitro human spermatogenesis has been attempted. Throughout the world several organisations have been trying to achieve this scientific breakthrough over the past fifteen years.

New therapeutic possibilities

This opens up long-awaited therapeutic possibilities,” said Professor Hervé Lejeune of the Department of Reproductive Medicine at Lyon University Hospital’s Women’s, Mother and Baby centre. “Achieving full spermatogenesis in vitro, from spermatogonia through to the final stage of mature spermatozoa, not just in animal species, but also in humans, is a real biotechnology achievement,” he added.

Now firmly recognised as a leader in their field, Kallistem is looking to accelerate their research. Until now the company has been self-funded, but with these latest developments the biotech company is looking for partners to expand into the United States.

Clinical trials from 2017

A goal of Kallistern is to establish a therapeutic development project involving patients at risk of reduced fertility. It’s expected that preclinical trials will run through until 2016, and 2017 will be the commencement of clinical trials.

Kallistem has a five year objective to provide licences to suppliers of assisted reproductive treatments to use their technologies, plus market them directly to private and public fertility treatments. Based on the company’s projections, the treatment for male infertility could amass €2.3Bn (£1.66 billion), with over 500, 000 new patients annually.

Global implications of In Vitro Spermatogenesis for male infertility

perfect sperm cellAcross the world in developed countries there is a predominant increase in male infertility rates. Over the past 50 years the number of spermatozoa in ejaculate is now halved and therapeutic approaches are restricted.

For example, pre-pubescent boys that are exposed to gonadotoxic treatments such as radiation or chemotherapy have no means to preserve their fertility. Worldwide this impacts over 15,000 young male cancer patients.

Many adult men also lack access to treatments to improve fertility. Approximately 20% of infertile men are diagnosed with non-obstructive azoospermia and unable to access effective treatment.

The new technologies developed by Kallistem aim to help these patients. By taking a testicular biopsy, the extracted spermatozoa can be cryopreserved. When the patient is ready to father a child it can then be used in ICSI in vitro fertilisation.

While it will take time before these new reproductive technologies become accessible, the groundwork has been done and now the world awaits the results of clinical trial. If successful, not only do investors stand to make a lot of money adopting these technologies, men will also benefit from being able to improve their chances of having a child. How much this new fertility treatment will cost is yet to be determined.


Improve your fertility with micronutrients

Several micronutrients such as vitamins, vitaminoids, amino acids and trace elements have proven themselves effective in improving sperm quantity, mobility and shape. This directly translates into better overall sperm quality and therefore a higher chance of pregnancy.


A natural food supplementation therapy for men is

  • relatively inexpensive
  • effective after three to six months
  • able to increase sperm motility by up to 23%, ejaculate volume by up to 33% and sperm count by up to 215%1
  • without side effects

For those reasons, male fertility food supplements are most definitely recommended as the first step in the treatment of oligospermia and asthenospermia.

Pregnancy test - happy surprised woman

We have tested the best natural male fertility boosters

Also men who have not yet taken a semen analysis test will benefit from supplementing micronutrients to ensure they are able to deliver high-quality semen.

There are no contraindications or side effects to this form of natural ‘sperm boosting’.

An excellent and detailed overview of many studies can be found in Steven Sinclair’s Male Infertility: Nutritional and Environmental Considerations.

A considerable range of male fertility supplements available on the UK market.

However, the products differ widely in price and composition. Menfertility.org has compared 10 of them in terms of value for money and the nutrients they provide.

Click the button to read the comparison of the best male fertility supplements


The most effective male fertility nutrients

A multitude of studies has shown that highly dosed nutrients have potentially significant impact on overall sperm quality.

The amino acid L-arginine has been proven to increase sperm count and motility 2 3.

Another amino acid L-carnitine has been found to significantly improve sperm concentration (count) and motility over a relatively short period of only 8 weeks4 5.

Vitamin D has been shown to improve sperm count, motility and morphology6.

Vitamin B9, better known as folic acid has been shown to increase count, motility and morphology7.

Zinc improves the immune system and significantly improves sperm count in combination with folic acid8.

Selenium in combination with vitamin E has been found to improve motility9 10 11.



Sperm cells take 11 weeks to mature in the testicles. Only then they are ready for ejaculation.
If you adjust your diet today it will thus take three months for the better sperm to be ready for fertilisation.
You must therefore keep the diet or supplement on an ongoing basis – ideally until your partner is pregnant or you decide for a different treatment.

All of the male fertility supplements in our great test include several of these nutrients at once, albeit at a lower dose. This is a cost-effective and convenient way making this type of fertility therapy affordable and requiring taking only one all-in-one supplement instead of many. 

To find out more about the effects of the individual nutrients and how the various supplements compare, please read menfertility.org’s male fertility supplement review.

Click the button to read the comparison of male fertility supplements



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  1. “Imhof, Martin et al., “Improvement of sperm quality after micronutritient supplementation”, e-SPEN, the European e-Journal of Clinical Nutrition and Metabolism, Epub published ahead of print.”
  2. “http://www.altmedrev.com/publications/5/1/28.pdf”
  3. http://www.ncbi.nlm.nih.gov/pubmed/7701414
  4. http://www.ncbi.nlm.nih.gov/pubmed/12568837
  5. http://www.ncbi.nlm.nih.gov/pubmed/8085668
  6. http://www.ncbi.nlm.nih.gov/pubmed/21427118
  7. http://www.ncbi.nlm.nih.gov/pubmed/20978181
  8. http://www.ncbi.nlm.nih.gov/pubmed/11872201
  9. http://www.ncbi.nlm.nih.gov/pubmed/21403799
  10. http://www.ncbi.nlm.nih.gov/pubmed/12623744
  11. http://www.ncbi.nlm.nih.gov/pubmed/8862739
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