Navigation Links
Early-stage sperm cells created from human bone marrow

Human bone marrow has been used to create early-stage sperm cells for the first time, a scientific step forward that will help researchers understand more about how sperm cells are created.

The research published today (Friday, April 13 2007), in the academic journal Reproduction: Gamete Biology, was carried out in Germany* by a team of scientists led by Professor Karim Nayernia, formerly of the University of Göttingen but now of the North-east England Stem Cell Institute (NESCI), based at the Centre for Life in Newcastle upon Tyne.

For the experiment, Prof Nayernia and his team took bone marrow from male volunteers and isolated the mesenchymal stem cells. These cells have previously been found to grow into other body tissues such as muscle.

They cultured these cells in the laboratory and coaxed them into becoming male reproductive cells, which are scientifically known as ‘germ cells? Genetic markers showed the presence of partly-developed sperm cells called spermatagonial stem cells, which are an early phase of the male germ cell development. In most men, spermatagonial cells eventually develop into mature, functional sperm but this progression was not achieved in this experiment.

Earlier research led by Prof Nayernia using mice, published in Laboratory Investigations, also created spermatagonial cells from mouse bone marrow. The cells were transplanted into mouse testes and were observed to undergo early meiosis - cell division - the next stage to them becoming mature sperm cells, although they did not develop further.

Talking about his newly published research paper, Prof Nayernia, of Newcastle University, said : "We’re very excited about this discovery, particularly as our earlier work in mice suggests that we could develop this work even further.

"Our next goal is to see if we can get the spermatagonial stem cells to progress to mature sperm in the laboratory and this should take aroun d three to five years of experiments. I’ll be collaborating with other NESCI scientists to take this work forward.

Prof Nayernia says a lengthy process of scientific investigation is required within a reasonable ethical and social framework to be able to take this work to its next stage or to say if it has potential applications in terms of fertility treatments in humans.

Prof Nayernia gained worldwide acclaim in July 2006 when he announced in the journal Developmental Cell that he and colleagues had created sperm cells from mouse embryonic stem cells and used these to fertilise mice eggs, resulting in seven live births.
'"/>

Source:University of Newcastle upon Tyne


Related biology news :

1. Early-stage immune system control of HIV may depend on inherited factors
2. Environmental chemical cocktail may sabotage sperm
3. Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory
4. UK sperm donor crisis
5. Protein translation in sperm
6. How sperm crack the whip
7. Chromosomal abnormalities in sperm higher after vasectomy reversal
8. Ecologists home in on how sperm whales find their prey
9. Study links high levels of nitric oxide to infertility and sperm DNA damage
10. Even when faint, ovary scent draws sperm cells
11. Single molecular mark seen as pivotal for genome compaction in spores and sperm

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)...  Veratad Technologies, LLC ( www.veratad.com ), an innovative ... verification solutions, announced today they will participate as a ... thru May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions ... evolving digital world, defining identity is critical to nearly ...
(Date:5/6/2017)... RAM Group , Singaporean based ... in biometric authentication based on a novel  ... to perform biometric authentication. These new sensors are based on ... Ram Group and its partners. This sensor will have ... and security. Ram Group is a next generation ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... 2017 , ... For the second time in three years, ... Award. Representatives of the FirstHand program travelled to Washington, D.C. Tuesday, October 10th, ... mission is to change the trajectory of STEM education in America by dramatically ...
(Date:10/10/2017)... 2017 SomaGenics announced the receipt of a ... RealSeq®-SC (Single Cell), expected to be the first commercially ... microRNAs) from single cells using NGS methods. The NIH,s ... accelerate development of approaches to analyze the heterogeneity of ... techniques for measuring levels of mRNAs in individual cells ...
(Date:10/9/2017)... 2017  BioTech Holdings announced today identification and ... ProCell stem cell therapy prevents limb loss in ... demonstrated that treatment with ProCell resulted in more ... compared to standard bone marrow stem cell administration.  ... reduction of therapeutic effect.  ...
(Date:10/9/2017)... ... October 09, 2017 , ... The ... medical marijuana products targeting the needs of consumers who are incorporating medical marijuana ... place in Phoenix, Arizona. , As operators of two successful Valley dispensaries, The ...
Breaking Biology Technology: