Where is stem cell therapy used for dogs and cats? A complete overview of applications

JointQ&AMeongsiljang Veterinary Advisory Board

Here’s a clear, easy-to-understand overview of the main uses, benefits, limitations, and treatment process of stem cell therapy for dogs and cats, explained from a pet owner’s perspective.

What is stem cell therapy? Where is it used?

A veterinarian explaining the concept of stem cell therapy to a pet owner and their pet.

Stem cell therapy is a regenerative medicine approach that involves injecting undifferentiated cells capable of developing into various tissues to help repair damaged joints and tissues. The most important thing to understand is that it is not a "cure-all." While potential benefits have been reported for certain conditions like osteoarthritis, many applications are still in the research phase and have not yet been widely adopted or sufficiently validated through clinical trials. Therefore, rather than making definitive claims about its effectiveness or scope, it is crucial to consult with your veterinarian to first confirm whether there is solid evidence supporting its use for your pet’s specific condition.

How do stem cells produce therapeutic effects?

In veterinary medicine, the stem cells most commonly used are mesenchymal stem cells (MSCs), which are derived from adipose tissue and bone marrow. These cells work in two ways: - Differentiation: They transform into cartilage, bone, or fat cells to directly repair damaged areas. - Immunomodulation: They secrete anti-inflammatory signaling molecules that reduce inflammation, slowing down pain and tissue destruction. In short, they provide a dual benefit of "tissue regeneration + inflammation relief."

Summary of stem cell therapy applications by field

Item	Osteoarthritis	Chronic kidney disease	Atopic dermatitis
Main route of administration	Intra-articular injection	Intravenous (systemic) injection	Intravenous/subcutaneous injection
Level of evidence	Research stage (potential reported)	Insufficient evidence	Insufficient evidence
Re-administration interval	No standard interval established (veterinarian's judgment)	No standard interval established (veterinarian's judgment)	No standard interval established (veterinarian's judgment)
Expected effect	Possible pain and function improvement (research stage)	Possible kidney function protection (research stage)	Adjunctive support through immune modulation (research stage)

May vary depending on the clinic and the patient's condition. Always consult your attending veterinarian.

Joint diseases — the most commonly used area

Joint diseases are an area where stem cell therapy is being actively researched. - Osteoarthritis: It is being studied as an adjunctive treatment, injected into damaged areas to reduce inflammation and improve mobility. - Partial cranial cruciate ligament rupture: Research is ongoing to determine whether it aids recovery as an adjunct before and after surgery. - Hip dysplasia: While potential benefits for pain relief and improved range of motion are discussed, it remains in the research stage. However, stem cell therapy for joints, including osteoarthritis, is not yet widely available or established as a standard clinical treatment. Therefore, efficacy and duration of effect may vary from patient to patient. It is advisable to discuss thoroughly with your veterinarian whether this treatment is appropriate for your pet.

A puppy receiving a stem cell injection for joint treatment.

What to check before treatment

Stem cell therapy is not yet a fully standardized treatment. Because cell culture and storage methods vary from clinic to clinic, outcomes can differ significantly. It is contraindicated in pets with tumors, as it carries the risk of stimulating tumor cell proliferation. Before treatment, ensure your pet undergoes tumor screening and basic blood and imaging tests, and verify that the clinic provides quality data such as cell count and viability.

Applications beyond joints — kidney, skin, and immune diseases

Research is also underway in several areas beyond joint health. - Chronic kidney disease: Studies are investigating whether stem cell therapy can slow the decline of kidney function, a topic of particular interest in cats. - Atopic dermatitis: Research is exploring its use as an adjunctive treatment, leveraging the immune-modulating effects of stem cells. - Ligament and tendon injuries: While being considered in rehabilitation contexts, stem cell treatments for these conditions remain in the early stages. - Inflammatory bowel disease: Studies are currently examining its potential through immune modulation. However, the level of evidence in these areas is generally lower than that for joint conditions. Therefore, it is best to view these applications as ongoing research rather than established, definitive treatments.

A cat receiving stem cell therapy via intravenous injection

What is the treatment process and cost?

The typical process follows these steps: ① health screening and tumor screening, ② fat or bone marrow aspiration (under general anesthesia), ③ cell culture for 2–4 weeks, and ④ injection or intravenous administration. Autologous stem cells (from the patient’s own body) are standard, though some clinics may use allogeneic cells (from a donor animal) prepared in advance. Costs per session vary widely depending on the clinic, treatment scope, and number of cells, so be sure to request a quote beforehand. Combining this therapy with the Dog Osteoarthritis Management Guide can enhance effectiveness.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently asked questions

Is a single stem cell treatment session enough?

The number of treatments varies depending on the condition and your pet’s response. Since there is no established standard schedule for stem cell therapy, your veterinarian will monitor your pet’s progress to determine whether additional treatments are needed and when to administer them. Please keep in mind that there is no fixed number of sessions.

Are there any side effects?

Studies generally report that MSC injections are relatively safe, though temporary pain or swelling at the injection site may occur, and rare adverse reactions are possible. In pets with tumors, there is a concern that the injections could stimulate cell proliferation, so caution is advised beforehand.

Can cats receive it too?

Yes, research is also being conducted on its application in cats. There is considerable interest in its use for conditions such as chronic kidney disease and osteoarthritis, with intravenous (systemic) administration being evaluated. However, since it is still in the research phase, consultation with your veterinarian is essential.

Can stem cells alone provide a complete cure?

Not necessarily. It’s most reasonable when used as a complementary therapy alongside standard treatments like surgery or medication. Be cautious of clinics advertising it as a “cure-all.”

Can older pets receive it as well?

Advanced age alone is not a contraindication. However, we must perform pre-anesthetic testing to confirm that your pet’s heart, liver, and kidney functions are strong enough to safely withstand anesthesia.